Device for the demounting of blades of a turbine or of a compressor

Abstract

A device ( 10 ) for the demounting of blades ( 12 ), which are pushed in with a blade root ( 20 ) on a wheel disk ( 14 ) of a blade wheel ( 16 ) of a turbine or of a compressor, is designed with a support ( 24 ) which is designed to be brought to bear against at least one component of the turbine, and is designed with an actuator ( 28 ) which is coupled to the support ( 24 ) and is designed for moving the blade root ( 20 ) mechanically out of the wheel disk ( 14 ).

1. A device for the demounting of a blade which is pushed in with a blade root on a wheel disk of a blade wheel of a turbine engine, comprising:
 a support adapted to bear against a component of the turbine engine, the support having a bearing adapted to bear against a step of the blade wheel; and 
 an actuator coupled to the support and for moving the blade root mechanically out of the wheel disk, 
 wherein the actuator has a tension element for gripping the blade moving out of the wheel disk. 
 
   
   
     2. The device as claimed in  claim 1 , wherein the turbine engine is located in a turbine section or a compressor section. 
   
   
     3. The device as claimed in  claim 1 , wherein the actuator uses hydraulics. 
   
   
     4. The device as claimed in  claim 1 , wherein the actuator has a bearing surface for moving a securing element arranged on the blade out of the wheel disk with the associated blade. 
   
   
     5. The device as claimed in  claim 1 , further comprising a holding mechanism adapted for supporting the blade. 
   
   
     6. The device as claimed in  claim 5 , wherein the holding mechanism is adapted for guiding the blade during removal from the wheel disk. 
   
   
     7. The device as claimed in  claim 1 , further comprising a cover adapted for covering sealing tips formed on the blade wheel. 
   
   
     8. The device as claimed in  claim 7 , wherein the cover and a holding mechanism are formed as a single part. 
   
   
     9. The device as claimed in  claim 1 , further comprising a monitor adapted for limiting the force acting on the blade by the actuator. 
   
   
     10. The device as claimed in  claim 9 , wherein the monitor is selected from the group consisting of a load cell, a corresponding control, an indicator, and combinations thereof. 
   
   
     11. A turbine engine having a demountable blade within a turbine section of the turbine engine, comprising:
 a wheel disk of a blade wheel adapted for the blade to be pushed into the wheel disk via a blade root; 
 a support adapted to bear against a component of the turbine, the support having a bearing adapted to bear against a step of the blade wheel; and 
 an actuator coupled to the support and for moving the blade root mechanically out of the wheel disk, 
 wherein the actuator has a tension element for gripping the blade moving out of the wheel disk. 
 
   
   
     12. The turbine engine as claimed in  claim 11 , wherein the actuator uses hydraulics. 
   
   
     13. The turbine as engine claimed in  claim 11 , wherein the actuator has a bearing surface for moving a securing element arranged on the blade out of the wheel disk with the associated blade. 
   
   
     14. The turbine engine as claimed in  claim 11 , further comprising a holding mechanism adapted for supporting the blade. 
   
   
     15. The turbine engine as claimed in  claim 11 , further comprising a cover adapted for covering sealing tips formed on the blade wheel. 
   
   
     16. The turbine engine as claimed in  claim 11 , further comprising a monitor adapted for limiting the force acting on the blade by the actuator.